CVE-2026-89878 (GCVE-0-2026-89878)
Vulnerability from cvelistv5
Published
2026-09-16 10:31
Modified
2026-10-19 08:54
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: media: s2255: check firmware size before reading trailing marker s2255_probe() reads a 4-byte marker and version from the last 8 bytes of the firmware blob (fw->data[fw_size - 8] and [fw_size - 4]). If the firmware file is shorter than 8 bytes, fw_size - 8 underflows and the access reads out of bounds. Validate the firmware size before indexing.
References
Impacted products
Vendor Product Version
Linux Linux Version: 14d962602c8bf86e63c9b9272be1f0360d0a448a
Version: 14d962602c8bf86e63c9b9272be1f0360d0a448a
Version: 14d962602c8bf86e63c9b9272be1f0360d0a448a
Version: 14d962602c8bf86e63c9b9272be1f0360d0a448a
Version: 14d962602c8bf86e63c9b9272be1f0360d0a448a
Version: 14d962602c8bf86e63c9b9272be1f0360d0a448a
Version: 14d962602c8bf86e63c9b9272be1f0360d0a448a
Version: 14d962602c8bf86e63c9b9272be1f0360d0a448a
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/usb/s2255/s2255drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6f6a5b0b0a84c2de0e152f2841e57bc226db924f",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
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              "status": "affected",
              "version": "14d962602c8bf86e63c9b9272be1f0360d0a448a",
              "versionType": "git"
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            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/usb/s2255/s2255drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.28"
            },
            {
              "lessThan": "2.6.28",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.51",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.5",
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                },
                {
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                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: s2255: check firmware size before reading trailing marker\n\ns2255_probe() reads a 4-byte marker and version from the last 8 bytes\nof the firmware blob (fw-\u003edata[fw_size - 8] and [fw_size - 4]). If the\nfirmware file is shorter than 8 bytes, fw_size - 8 underflows and the\naccess reads out of bounds. Validate the firmware size before indexing."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:54:11.089Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6f6a5b0b0a84c2de0e152f2841e57bc226db924f"
        },
        {
          "url": "https://git.kernel.org/stable/c/8eca0f85eeb0789be40e637bcf9a21c4265b6c6f"
        },
        {
          "url": "https://git.kernel.org/stable/c/ffc27411ea60b8a09f1fea3d664b65210fdeb454"
        },
        {
          "url": "https://git.kernel.org/stable/c/5626785b0e4665326e4d96736c106161da09b2f0"
        },
        {
          "url": "https://git.kernel.org/stable/c/3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d"
        },
        {
          "url": "https://git.kernel.org/stable/c/342632a4d8ba3fafc1556deee0b7a48dd7860336"
        },
        {
          "url": "https://git.kernel.org/stable/c/7d221859ba45d7228d0138c9a3e55bd3bb31e14e"
        },
        {
          "url": "https://git.kernel.org/stable/c/330f2936ab768c7215322a476f033143e8891d28"
        }
      ],
      "title": "media: s2255: check firmware size before reading trailing marker",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89878",
    "datePublished": "2026-09-16T10:31:44.876Z",
    "dateReserved": "2026-09-11T19:38:34.772Z",
    "dateUpdated": "2026-10-19T08:54:11.089Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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